Bobbin-holder ejector.



. tains tomake and use the same.

UNTTED STATES PATENT carica.`

FRA-NK H. WEI'IZ, OF DURYEA, PENNSYLVANIA.

BOBBIN-HOLDER EJECTOR. v

Patented Feb. 17, 1914.

To all @07mm it may concern citizen of the United States, residing atDuryea, in the county of Luzerne and State of Pennsylvania, haveinvented 'certain new and useful Improvements in Bobbin-Holder Ejectors;and I do hereby declare the following to be a full, clear,l and exactdescription of the invention, such aswvill enable others .skilled in theart to Which it apper- This invention relates to a manually operabledevice for automatically releasing and ejecting the bobbin holder andbobbin from a rotary sewing machine.

The object of the.invent.ion is the provision of a device of thischaract'erwhich is quickly and conveniently operable and posi- 'tive inthe performance of its functions.

Another object is the provision of a releasing and ejecti-ng ldevice ofsimple construction and few parts which may be applied to the ordinaryconstructioniof rotary 'sewing machine with but slightvariation in theconstruction of the parts thereof.

ln-tlfe accompanying drawing, Figure 1 represents a fragmentary View,partly in section, through the base of a rotary sewing machine showingmy improvement applied thereto.` Fig. 2 represents a fragmentary sideelevation, and, Fig. 3 represents a longitudinal sectional vievvthrough' the main shaft of the machine, the bobbin holder and bobbin.

' Referring to the drawings, wherein similar referencel charactersdesignate corre'- sponding parts, throughout the severaly views, 5indicates the main shaft supported below the base 6, over which aremounted the .usual adjuncts of the ordinary rotarysewing machine.v Theshaftr is preferably formed in two parts, the part carrying vthe crank 7beingthreaded at the inner end and vhaving a Aflange 8 at the inner endof the .threaded portion. The inner portion of the other art ofthe shaftis enlarged at 9 and threa ed at the inner end to receive the threadsofthe first part. The second part is provided with a longitudinal bore10 extending in alinement with the bore of the sleeve 10a integral withtherotary hook or shuttle l1, and said bore 10 is enlarged at 11 at theinner end, and the Wall of the enlarged portion of the'fbore is slottedat 12. A plunger 1 3 is positioned in the bores 10 and 1l, and

l the end 13a thereof is headed to provide an Be it known that. l, FRANKH. l/Vnirz, af

abutment for a spring`14, the normal tendency of which is to Withdrawthe'plunger 13. A channeled collar 15 is slidably mounted over theenlarged portion of the shaft and carries a pin 16 which is secured atits inner end through the head 13*L and is adapted to worklongitudinally through the slot 12. A shifting rod 17 is slidablelongitudinally'through the depending ilanges'lS, ordinarily formedintegrally with the base 6, which latter is'in this instance providedwith a slot 19 through which projects the operating lever or handle 2()fixed to the shifting rod 17. VOneend of an arm 21 is split and suitablyfixed over the `shifting rod 17, and yqlfed wat the opposite end to beloosely received Within the channel of the collar 15. One end of theshifting rod 17 is beveled on its under surface to provide a cam face22. A bobbin holder release lever 23 is pivorted at 24 to the base 6 orpart of the frame and 1s provided with a depending lug 25, at one end,which is normally held against the bobbinholder for securing the latterin position by aspring 26. The opposite end of the lever 23 is engagedagainst the beveledface 22 of the shifting ro ,The parts. hereindescribed which comprise the bobbin holder ejector do not interfere withthe usual operation of the sewing machine, and the shifting rod 17 andplun-4 ger 13 are normally held retracted by the tension of the spring14, as will be under stood.

To operate the parts to release and eject the bobbin holder, the handleor lever is shifted by the operator, moving the shifting rod 17longitudinally, causing the? release lever -23 to be rocked suicientlyto disengage the lug 25 from the bobbin holder.A Simuly taneously, themovement of the rod 17 is imdium of the arm 21 and collar 15.. As theplunger moves outwardly through the bore4 of the sleeve 10, it engagesthe end of the stem 27 securedl in the usnal Way to the holder 28 andejects the latter together with thebobbin 29 removably secured therein.

To replace the bobbinand holder in position within the hook, the freeend of the bobbin release lever 23, which is preferably curvedoutwardlyto provide a silitable grip, is partially lifted andthe partsplaced in position, after 'which the lever is Released 11 omprising ab'fobbi "leiter` to release the" bobbin jl1`older,i VVand. :an

` holder vrelease'lever, eans for depressmgone end offssf'uilv release II I 3u-In', al 'sewing machine, tgegcombnatiion een@ fnigpagnt myl be@buigen zo Witnesses: n

of abobbinrholder releasel'leveri-means for neotoxvr'between saiddepressing means' land said ejector plupgerpermittng the ejetor ,plunger"means',

to rotate-- dndpeldentlyfof said whereby sad' bobbinv holder 'releaselevef and ejector phtngerare nvloyed smul-I IIL te'stlfmon'g7^ whereofllatfelsignbed -Iiame to this" specifica-tion" in fthe' ]gn 'eser'1eeot' LEWIS SMITH;

W. JgDEvUNE.

